beezm/islaApocalypse
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
islaApocalypse/Tools
History
beezm ed16a7f668 tune: edge warp 5 m @12/island -> 12 m @20/island (terrain-water task 10) 
Sized from measurement, not taste-first. |grad raw| at the K3/K4/K5
contours on seed 1375359975 is p50 0.00088 raw/px, so the first try (5 m,
12 undulations/island) displaced the shelf boundary a MEAN of 3.7 px with
a roughness ratio of 1.03 -- real, and invisible at map scale. At 12 m
and 20/island the boundary moves a mean 8.4 px (bench) / 9.1 px
(plateau), roughness ratio 1.09, and the outline grows the notches, coves
and peninsulas the sketch asked for.

Measured cost at 12 m (A off vs B, same seed): lowland and toe/red bands
bit-identical in both pixel count and slope -- the K2 pin holding exactly,
as designed. Foothill riser p50 0.681 -> 0.676 m/px, p90 1.445 -> 1.478,
max 3.09 -> 3.81. Bench p50 0.21 -> 0.232 (micro-relief included), still
buildable. Peaks max identical at 6.55.

Safety bound restated from "half the margin to a fixed knot" to 2/3 of
the smaller adjacent band, which is the constraint that actually matters:
the squeezed band never compresses below a third of its nominal width, so
its slope never more than triples. That puts the ceiling at 16.45 m for
the v5 knots and leaves the 12 m default real headroom if the gate says
"more".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-08 20:52:08 -04:00
..
Scenes docs: BLUEPRINT_FORMAT.md + README updates for the v2 container (terrain-water task 02) 2026-08-06 07:31:03 -04:00
Scripts tune: edge warp 5 m @12/island -> 12 m @20/island (terrain-water task 10) 2026-08-08 20:52:08 -04:00
README.md docs: water sections (WBID/WBTB/WSRF), no-BSIN rationale, SkipRoads + water stage in READMEs (terrain-water task 03) 2026-08-07 01:40:48 -04:00

README.md

/Tools

Offline developer utilities. Nothing here ships. These generate the source data that /Server and /Client later consume, which keeps world-generation logic out of the shipped client.

The 2D world generator

Script: Tools/Scripts/MapGenerator.cs · Scenes: Tools/Scenes/MapPreview.tscn and Scenes/MapCaptureTool.tscn

Builds the topographical and logistical foundation of the island before any 3D exists.

  • Resolution is config-driven, from ServerConfig.json's MapProfile: 4K/6K/8K/10K → 4096 / 6144 / 8192 / 10240. Shipped default is 8K. 1 pixel = 1 in-game metre = 1 voxel footprint. (The MapSize field initialiser in the script says 4096, but it is overwritten from config before use.)
  • Topography: FastNoiseLite plus distance-falloff maths for a guaranteed mainland island, a mountain spine, dynamic temperature-driven sea level, and an impact crater pushed into the northern coast (carved at 80 % of its radius so a landbridge always survives).
  • Water bodies: the classified water promoted into explicit blueprint data (ocean + labeled lakes with transitional per-body levels — WBID/WBTB/WSRF sections), plus priority-flood basin diagnostics. The SkipRoads config toggle turns a full ~26-min generation into a ~80 s road-less iteration cycle.
  • Logistics: AStarGrid2D pathfinding producing a looping continental highway, a branch to the mountain hub, and county roads daisy-chained outward with Prim's algorithm. Paths are decimated (Ramer–Douglas–Peucker) then smoothed (4 Chaikin passes).
  • Zoning: biome mapping and tiered town/POI placement by slope, temperature and proximity.

⚠️ A* is the known bottleneck

The grid is one node per pixel — 67 million nodes at 8K — and the weight-setup pass walks every one of them. A full generation can stall long enough that runs get abandoned. await yields are sprinkled through the road stage, but they cannot interrupt a single engine-side GetPointPath call, so they only help between paths. Expect a regeneration to take minutes, or to need abandoning.

Outputs — written to user://, not into the project

File What it is
MapData_Seed_<seed>.dat The binary blueprint the server reads — v2 tagged container (~336 MB at 8K; contract in Core/Scripts/BLUEPRINT_FORMAT.md)
MapData_Seed_<seed>_v1.dat The same content in the legacy v1 format (~512 MB), dual-written as a safety net until a future removal task
Map_Seed_<seed>.png Visual snapshot of the map, for reviewing and picking seeds

On Linux: ~/.local/share/godot/app_userdata/islaApocolypse/.

Running it

Open Tools/Scenes/MapPreview.tscn and press F6. It is also the project's main scene, so pressing F5 anywhere runs this — which is why F5 regenerates your world instead of starting the game. Use Scenes/MapCaptureTool.tscn when you specifically want the full-resolution PNG.

Rules

  1. No client dependencies. Nothing here may reference UI, player controllers or shaders in /Client.
  2. Data out, nothing in. Tools emit .dat/.png/.json; they never write to a live server save.
  3. No magic numbers. Distances and radii scale off MapSize or the derived scaleFactor, so the generator behaves the same at every profile.